Preliminary results on the susceptibility of adult Teleogryllus commodus (field crickets) used as model organisms in place of Hemiandrus spp (New Zealand ground wētā) to Fluralaner, a commonly used anti-parasitic used in companion animal veterinary medicine
Loading...
Supplementary material
Other Title
Authors
Goodwin, Ben
Marsh, M.
Cameron, Kristie
McMenamin, Chloe
Marsh, M.
Cameron, Kristie
McMenamin, Chloe
Author ORCID Profiles (clickable)
Degree
Grantor
Date
2024-11-16
Supervisors
Type
Conference Contribution - Poster Presentation
Ngā Upoko Tukutuku (Māori subject headings)
Keyword
Aotearoa
New Zealand
crickets (Teleogryllus commodus)
fluralaner
companion animals
parasites
topical treatments
conservation
wētā (Hemiandrous spp)
New Zealand
crickets (Teleogryllus commodus)
fluralaner
companion animals
parasites
topical treatments
conservation
wētā (Hemiandrous spp)
ANZSRC Field of Research Code (2020)
Citation
Goodwin, B., Marsh, M., Cameron, K.E., & Mc Menamin, C. (2024, November 16). Preliminary results on the susceptibility of adult Teleogryllus commodus (field crickets) used as model organisms in place of Hemiandrus spp (New Zealand ground wētā) to Fluralaner, a commonly used anti-parasitic used in companion animal veterinary medicine [Poster presentation]. Unitec School of Environmental and Animal Sciences Research Symposium 2024, Mount Albert, Auckland, New Zealand
https://hdl.handle.net/10652/6776
Abstract
Anti-parasitic treatments for companion animals are approved with the understanding that their benefits exceed the potential harm. However, when administering these treatments to large populations of healthy companion animals, the environmental consequences of millions of doses are not currently being considered. The benefits may not necessarily outweigh the environmental harm to Aotearoa New Zealand's unique ecosystem. Fluralaner, a commonly used broad-spectrum anti-parasitic treatment in companion animals, is categorised as an isooxazoline insecticide and acaricide. It is a relatively recent addition to the market, initially approved for use by topical treatment in cats and dogs in 2015 in New Zealand. This study aims to investigate the impact of fluralaner on native invertebrates in Aotearoa New Zealand. The efficacy of fluralaner on native invertebrates in Aotearoa New Zealand was evaluated through topical application to the thorax of Teleogryllus commodus (crickets) a taxonomically similar species to the New Zealand ground wētā (Hemiandrous maculifrons). Over-the-counter flea and worm treatment containing fluralaner was suspended in ultra-pure water at various concentrations. Observations of behavioural changes were made at 1 hour, 24 hours, 48 hours, and 72 hours post-application. Result indicates the contact exposure to fluralaner did not cause consistent mortality. However, an affect - unable to move away from noxious stimuli but still responsive, on the back but able to move away noxious stimuli, hyperextended legs with inability to still upright - was seen at concentrations as low as 2 mg/mL (66% were affected at 24 hours). The LC50 was observed at 14 mg/mL at 24 hours. The environmental impact from runoff or through excretions from the use of commonly used anti-parasitic drugs in companion animal species requires further investigation. With concentrations as low as 2 mg/mL causing an affect in Teleogryllus commodus at 24 hours, further investigation is required on pathways to the environment, accumulative effects, the effects of this drug on non-target organism unique to Aotearoa New Zealand and potential hotspot location of environmental contamination.
Publisher
Permanent link
Link to ePress publication
DOI
Copyright holder
Authors
Copyright notice
All rights reserved